Completed Coursera: Kotlin for developers course

src/Nullable.kt

@@ -0,0 +1,10 @@
+fun main() {
+    var nullableString: String? = null
+    println(nullableString?.length ?: 0) // Null safe method call with elvis operator for fallback
+    nullableString = "Not Null"
+    println(nullableString)
+}
+
+fun nullableFun(value: Any?) {
+    value!! // Explicitly tell the compilar that it's not null
+}